EP1727361A2 - Recepteur de radiodiffusion numerique et procédé pour le traitement des données de radiodiffusion numérique avec ceci - Google Patents

Recepteur de radiodiffusion numerique et procédé pour le traitement des données de radiodiffusion numérique avec ceci Download PDF

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Publication number
EP1727361A2
EP1727361A2 EP06010950A EP06010950A EP1727361A2 EP 1727361 A2 EP1727361 A2 EP 1727361A2 EP 06010950 A EP06010950 A EP 06010950A EP 06010950 A EP06010950 A EP 06010950A EP 1727361 A2 EP1727361 A2 EP 1727361A2
Authority
EP
European Patent Office
Prior art keywords
digital broadcasting
data
broadcasting data
demodulated
reception terminal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP06010950A
Other languages
German (de)
English (en)
Other versions
EP1727361A3 (fr
Inventor
Seong-Geun Kwon
Jae-Il Joo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020060045916A external-priority patent/KR100770879B1/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of EP1727361A2 publication Critical patent/EP1727361A2/fr
Publication of EP1727361A3 publication Critical patent/EP1727361A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/3805—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving with built-in auxiliary receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/414—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance
    • H04N21/41407—Specialised client platforms, e.g. receiver in car or embedded in a mobile appliance embedded in a portable device, e.g. video client on a mobile phone, PDA, laptop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
    • H04N5/455—Demodulation-circuits

Definitions

  • the present invention relates to digital broadcasting, and more particularly to a digital broadcasting reception terminal and a method for processing digital broadcasting data using the same.
  • digital broadcasting refers to broadcasting which provides users, in place of conventional analog broadcasting, with a service of a higher screen quality, a higher sound quality, and a higher service quality.
  • the DMB service refers to a broadcasting service which enables a user to view various multimedia broadcasting through multiple channels by a receiver for a vehicle or a personal portable receiver equipped with a non-directional reception antenna, even while the user is moving.
  • FIG. 1 illustrates an example of a structure of a system for implementing a digital broadcasting service.
  • the system for implementing a digital broadcasting service includes a data sending center 10, a satellite 20, and reception devices (e.g. a mobile communication terminal 30, a receiver 40 for an automobile, a household receiver 50, etc.).
  • the data sending center 10 compresses, modulates, and then transmits digital multimedia data (which includes image, voice, and data signals) to the satellite 20.
  • the satellite 20 receives, amplifies, and frequency-converts the signal from the data sending center 10, and then transmits the converted signal back to the ground.
  • the reception devices 30, 40, and 50 receive, demodulate, and decompress the signal from the satellite 20, and then output a restored original signal.
  • the mobile communication terminal is equipped with a separate multimedia chip, e.g. a DM270 chip, in addition to a communication modem chip, e.g. a Mobile Station Modem (MSM), for controlling the mobile communication function. Therefore, in a mobile communication terminal equipped with the multimedia chip, the communication modem chip performs the mobile communication function while the multimedia chip performs the digital broadcasting reception function, so that it is nearly improbable that interference between two chips may occur.
  • a separate multimedia chip e.g. a DM270 chip
  • MSM Mobile Station Modem
  • a conventional method for processing the digital broadcasting data by the digital broadcasting reception terminal having two chips is as follows.
  • the digital broadcasting reception terminal receives and demodulates the digital broadcasting data.
  • the digital broadcasting reception terminal reads the demodulated digital broadcasting data according to a polling scheme and parses the data into audio and video data.
  • the digital broadcasting reception terminal outputs the parsed data through a display unit and a speaker.
  • the polling scheme has no big influence on the mobile communication function, because a separate multimedia chip is mounted in each of the terminals.
  • a digital broadcasting reception terminal having a single chip e.g. MSM6550
  • OS Operation System
  • an object of the present invention is to provide a digital broadcasting reception terminal and a digital broadcasting data processing method using the same, which can reduce the overhead increase of the operation system as well as the use of resources.
  • a digital broadcasting reception terminal including a digital broadcasting receiver for receiving digital broadcasting data; a demodulator for demodulating the received digital broadcasting data and outputting a reporting signal when the digital broadcasting data have been demodulated up to a preset capacity, wherein the reporting signal reports demodulation of the digital broadcasting data up to the preset capacity; and a control unit for reading and outputting the demodulated digital broadcasting data when the reporting signal has been output from the demodulator.
  • control unit includes a memory for storing the digital broadcasting data read from the demodulator, and a display unit and audio processor for outputting the parsed audio and video data.
  • a method for processing digital broadcasting data by a digital broadcasting reception terminal including receiving and demodulating digital broadcasting data; reading and storing the demodulated digital broadcasting data when the digital broadcasting data have been demodulated up to a preset capacity; and outputting the stored digital broadcasting data.
  • FIG. 2 is a block diagram illustrating a structure of a transmitter part of a typical digital broadcasting reception system.
  • the transmitter part of a typical digital broadcasting reception system includes an audio signal encoder 110, an image signal encoder 120, a Transport Stream (TS) multiplexer 130, a modulator 140, and a Radio Frequency (RF) unit 150.
  • the audio signal encoder 110 encodes an input analog audio signal 102 into audio data and compresses the audio data.
  • the image signal encoder 120 encodes an input analog image signal 104 into image data and compresses the image data.
  • the TS multiplexer 130 divides the digital audio data input from the audio signal encoder 110 and the digital image data input from the image signal encoder 120 in accordance with the TS packet size and then multiplexes the divided packets, so as to transmit the packets through transport channels.
  • the TS packet has a size of 188 bytes.
  • the modulator 140 loads the TS packets input from the TS multiplexer 130 on sub-carriers.
  • the RF unit 150 transmits an RF signal through an antenna including the TS packets modulated by the modulator 140.
  • FIG. 3 is a block diagram of a digital broadcasting reception terminal according to the present invention
  • FIG. 4 is a more detailed block diagram illustrating several elements in the digital broadcasting reception terminal shown in FIG. 3.
  • the digital broadcasting reception terminal can perform both the digital broadcasting reception function and the mobile communication function.
  • an MSM chip which is a communication modem chip
  • MSM 6550 a communication modem chip
  • the digital broadcasting reception terminal 200 includes a digital broadcasting receiver 210, a demodulator 220, a memory 230, a key input unit 240, a control unit 250 (e.g. MSM 6550), an audio processor 260, and a display unit 270.
  • the digital broadcasting receiver 210 receives an RF signal (i.e. digital broadcasting data) transmitted from the transmitter part shown in FIG. 2 and transfers the received RF signal to the demodulator 220.
  • the demodulator 220 removes the sub-carriers from the RF signal received from the digital broadcasting receiver 210 and demodulates it into a digital data stream.
  • the demodulator 220 stores the demodulated digital data stream in a Dual Ported Random Access Memory (DPRAM) data area 225, shown in FIG. 4.
  • DPRAM Dual Ported Random Access Memory
  • the demodulator 220 When the digital data stream has been demodulated up to a preset capacity, for example, when 12 TS packets (12*188 bytes) have been demodulated, the demodulator 220 outputs a reporting signal which reports the demodulation to the control unit 250. That is, when a preset amount of digital broadcasting data (i.e. digital data stream) has been stored in the DPRAM data area 225, the demodulator 220 outputs a reporting signal which reports the storage to the control unit 250.
  • a preset amount of digital broadcasting data i.e. digital data stream
  • the preset capacity for example, 12 packets which serves as a condition for output of the reporting signal by the demodulator 220 is not fixed but is only an example with respect to the present invention.
  • the memory 230 stores various information necessary for control of operation of the digital broadcasting reception terminal 200.
  • the key input unit 240 includes character keys, number keys, and various function keys and outputs a key input signal corresponding to a user's key input to the control unit 250.
  • the control unit 250 (e.g. MSM 6550) controls the general operation of the digital broadcasting reception terminal 200.
  • the control unit 250 includes a TS parser 251, a ring buffer 253, a video Element Stream (ES) buffer 255, and an audio ES buffer 257, as shown in FIG. 4.
  • ES video Element Stream
  • the control unit 250 When receiving the reporting signal from the demodulator 220, the control unit 250 reads the digital broadcasting data stored in the DPRAM data area 225 of the demodulator 220 and stores the read data in the ring buffer 253.
  • the ring buffer 253 may be included in the memory 230. The larger the capacity of the ring buffer 253, the larger the preset capacity (for example, 12 packets) which serves as a condition for output of the reporting signal by the demodulator 220 may become.
  • the TS parser 251 parses the digital broadcasting data stored in the ring buffer 253 into audio and image (i.e. video) data, and the parsed audio and image data are output by the audio processor 260 and the display unit 270 after passing through the audio ES buffer 257 and the video ES buffer 255.
  • the demodulator 220 may fail to output the reporting signal in spite of the existence of demodulated data.
  • FIG. 5 is a flowchart illustrating an operation process of a digital broadcasting reception terminal according to the present invention.
  • control unit 250 receives an RF signal containing digital broadcasting data through the digital broadcasting receiver 210 (step S110).
  • the demodulator 220 removes the sub-carriers from the received RF signal from the digital broadcasting receiver 210 and demodulates it into a digital data stream (step S120). Then, the demodulator 220 stores the demodulated digital data stream at the DPRAM data area 225.
  • the control unit 250 determines if the received digital data have been demodulated up to a preset capacity, e.g. 12 packets (step S130). Simultaneously, the control unit 250 checks if a reporting signal is output from the demodulator 220. As a result, it is possible to prevent the control unit 250 from unnecessarily checking the state of the DPRAM in order to read the digital broadcasting data particularly even when there is no demodulated digital broadcasting data in the DPRAM data area 225 of the demodulator 220.
  • the reporting signal is a signal which reports that the digital broadcasting data have been stored up to a preset capacity in the DPRAM data area of the demodulator 220.
  • the control unit 250 determines that the digital broadcasting data have been stored up to a preset capacity, reads the demodulated digital broadcasting data from the DPRAM data area 225, and stores the read data in the ring buffer 253 (step S140).
  • control unit 250 may read demodulated digital broadcasting data and store the read data in the ring buffer 253 after a predetermined period.
  • the control unit 250 parses the digital broadcasting data stored in the ring buffer 253 into audio data and video data (step S 150).
  • the control unit 250 decodes the parsed digital broadcasting data (that is, the audio data and the video data) into an analog audio signal and an analog video signal, and outputs the decoded signals through the audio processor 260 and the display unit 270.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Circuits Of Receivers In General (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
EP06010950A 2005-05-27 2006-05-26 Recepteur de radiodiffusion numerique et procédé pour le traitement des données de radiodiffusion numérique avec ceci Withdrawn EP1727361A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR20050045058 2005-05-27
KR1020060045916A KR100770879B1 (ko) 2005-05-27 2006-05-23 디지털 방송 수신 단말기 및 그를 이용한 디지털 방송데이터 처리 방법

Publications (2)

Publication Number Publication Date
EP1727361A2 true EP1727361A2 (fr) 2006-11-29
EP1727361A3 EP1727361A3 (fr) 2009-03-04

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EP06010950A Withdrawn EP1727361A3 (fr) 2005-05-27 2006-05-26 Recepteur de radiodiffusion numerique et procédé pour le traitement des données de radiodiffusion numérique avec ceci

Country Status (2)

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US (1) US20060268994A1 (fr)
EP (1) EP1727361A3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20090065345A (ko) * 2007-12-17 2009-06-22 현대자동차주식회사 신축 가능한 통합형 안테나
US8948269B1 (en) * 2011-03-23 2015-02-03 Marvell International Ltd. Processor implemented systems and methods for optimized video decoding using adaptive thread priority adjustment

Citations (6)

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JPH01264034A (ja) * 1988-04-14 1989-10-20 Canon Inc データ通信装置
US5301274A (en) * 1991-08-19 1994-04-05 Multi-Tech Systems, Inc. Method and apparatus for automatic balancing of modem resources
JPH08263234A (ja) * 1995-03-27 1996-10-11 Canon Inc データ受信装置とその制御方法及びそれを用いた印刷装置
WO2002025933A1 (fr) * 2000-09-19 2002-03-28 Stmicroelectronics Limited Traitement de donnees tamponnees
JP2002325113A (ja) * 2001-04-26 2002-11-08 Matsushita Graphic Communication Systems Inc ソフトウェアモデム及びその割り込み制御方法
EP1511318A2 (fr) * 2003-08-20 2005-03-02 Samsung Electronics Co., Ltd. Décodeur vidéo et procédé de décodage vidéo

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KR100531378B1 (ko) * 2003-07-25 2005-11-28 엘지전자 주식회사 이동 ｔｖ 서비스에서의 정보전송방법
KR20050038143A (ko) * 2003-10-21 2005-04-27 삼성전자주식회사 지역 특화 부가정보 방송을 위한 디지털 방송 시스템 및그 방송 서비스 방법
KR101033582B1 (ko) * 2004-04-09 2011-05-11 엘지전자 주식회사 방송 수신기에서의 시간 역인터리빙을 위한 메모리 제어 방법
KR100630086B1 (ko) * 2004-05-12 2006-09-27 삼성전자주식회사 휴대단말기에서 디지털멀티미디어방송을 수신하는 장치
KR100605906B1 (ko) * 2004-08-02 2006-08-01 삼성전자주식회사 위치 정보를 포함한 디지털 방송 신호를 이용하는 디지털방송 시스템 및 그 방법
WO2006028337A1 (fr) * 2004-09-06 2006-03-16 Samsung Electronics Co., Ltd. Appareil et procede permettant la reception de signaux radiodiffuses de contenus multimedia numeriques
KR100690725B1 (ko) * 2004-09-08 2007-03-09 엘지전자 주식회사 위성방송수신기의 채널 전환 장치
CN101023660A (zh) * 2004-09-20 2007-08-22 三星电子株式会社 数字多媒体广播系统中接收广播服务的装置与方法
KR100716988B1 (ko) * 2004-11-20 2007-05-10 삼성전자주식회사 Ｄｍｂ에서 제공되는 서비스의 디스플레이 방법, 선호서비스 관리방법 및 장치
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Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01264034A (ja) * 1988-04-14 1989-10-20 Canon Inc データ通信装置
US5301274A (en) * 1991-08-19 1994-04-05 Multi-Tech Systems, Inc. Method and apparatus for automatic balancing of modem resources
JPH08263234A (ja) * 1995-03-27 1996-10-11 Canon Inc データ受信装置とその制御方法及びそれを用いた印刷装置
WO2002025933A1 (fr) * 2000-09-19 2002-03-28 Stmicroelectronics Limited Traitement de donnees tamponnees
JP2002325113A (ja) * 2001-04-26 2002-11-08 Matsushita Graphic Communication Systems Inc ソフトウェアモデム及びその割り込み制御方法
EP1511318A2 (fr) * 2003-08-20 2005-03-02 Samsung Electronics Co., Ltd. Décodeur vidéo et procédé de décodage vidéo

Also Published As

Publication number Publication date
EP1727361A3 (fr) 2009-03-04
US20060268994A1 (en) 2006-11-30

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